Mercantile Bank Routing Number in California

Mercantile Bank has one routing number registered in California. When setting up direct deposit, bill pay, or wire transfers, make sure to use the routing number assigned to your specific branch or account — using the wrong one can delay or reject your transaction.

Your routing number appears on the bottom-left of any Mercantile Bank check, in the Mercantile Bank mobile app under account details, or by calling Mercantile Bank at 714-438-2500. For ACH transfers like direct deposits and bill payments, use your state-specific routing number. For domestic wire transfers, Mercantile Bank may use a different number — always confirm with the bank before sending a wire.

All Mercantile Bank routing numbers in California can be used for ACH transactions, direct deposits, and electronic payments. They are processed through the Federal Reserve and are verified using the standard ABA checksum algorithm.